Right Colic Artery, Posterior View

Description

Oriented from a posterior approach, the right colic artery is traced as a branch of the superior mesenteric artery coursing laterally and to the right within the mesentery toward the ascending colon. Medial to it run the abdominal aorta and inferior vena cava, with the superior mesenteric vein closely accompanying the arterial trunk, while the right colic vessels fan superiorly and inferiorly along the colonic wall. Adjacent retroperitoneal landmarks include the right kidney with its renal artery and vein, and the ureter descending inferiorly toward the urinary bladder. Posterior vascular views like this are where colic anatomy becomes practical, because the right colic artery is variable in origin and caliber and can arise directly from the superior mesenteric artery, share a common trunk with the middle colic, or be absent with compensation from the ileocolic artery. Variations matter during right hemicolectomy and complete mesocolic excision, when surgeons ligate vessels near the superior mesenteric axis and must distinguish arterial branches from the superior mesenteric vein to avoid hemorrhage or colonic ischemia. Lymphadenectomy follows these same pedicles. Use this plate for teaching midgut arterial supply in gross anatomy, GI surgery rotations, and radiology correlation when discussing SMA branch patterns on CT angiography or intraoperative fluorescence perfusion assessment. It also fits colorectal surgery texts illustrating central vascular ligation and the relationship of mesenteric vessels to retroperitoneal structures. Anatomical accuracy verified by SciePro's Medical Advisory Board.